Saturday, April4, 2020
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Marine Weather and Tides
Seabrook, TX

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 7:03AMSunset 7:41PM Saturday April 4, 2020 9:33 PM CDT (02:33 UTC) Moonrise 3:04PMMoonset 3:55AM Illumination 91% Phase: Waxing Gibbous; Moon at 12 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
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GMZ335 Galveston Bay- 330 Pm Cdt Sat Apr 4 2020
.small craft should exercise caution...
Tonight..Northeast winds around 15 knots. Bay waters slightly choppy to choppy. Patchy fog. A chance of showers until early morning. Isolated Thunderstorms. A slight chance of showers late.
Sunday..Northeast winds 10 to 15 knots becoming east in the afternoon. Bay waters slightly choppy. A slight chance of showers and isolated Thunderstorms.
Sunday night..Southeast winds around 10 knots. Bay waters smooth to slightly choppy. A slight chance of showers and isolated Thunderstorms.
Monday..Southeast winds 10 to 15 knots. Bay waters slightly choppy. A slight chance of showers in the morning. Isolated Thunderstorms. A chance of showers in the afternoon.
Monday night..Southeast winds 10 to 15 knots becoming south after midnight. Bay waters slightly choppy becoming smooth to slightly choppy after midnight. A slight chance of showers and isolated Thunderstorms in the evening.
Tuesday..South winds around 10 knots. Bay waters smooth to slightly choppy.
Tuesday night through Wednesday night..South winds 5 to 10 knots. Bay waters smooth.
Thursday..Southwest winds 5 to 10 knots. Bay waters smooth. A chance of showers and isolated Thunderstorms.
Thursday night..North winds 5 to 10 knots becoming northeast 10 to 15 knots after midnight. Bay waters smooth becoming slightly choppy after midnight. A chance of showers and isolated Thunderstorms.
GMZ300 Synopsis For High Island To The Matagorda Ship Channel Out 60 Nautical Miles Including Galveston And Matagorda Bays 330 Pm Cdt Sat Apr 4 2020
Synopsis for high island to matagorda ship channel out 60 nm.. A tight pressure gradient in the wake of a cold front will bring moderate to occasionally strong offshore winds to the area through Sunday morning. Periods of light to moderate rain can also be expected through this period. Light to moderate northeast to east winds on Sunday will become onshore Sunday night and Monday as a warm front moves inland. A mainly light onshore flow and low seas can be expected until the next cold front moves through the area Thursday night or early Friday morning.


7 Day Forecast for Marine Location Near Seabrook, TX
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location: 29.61, -94.98     debug


Area Discussion for - Houston/Galveston, TX
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FXUS64 KHGX 050011 AFDHGX

Area Forecast Discussion National Weather Service Houston/Galveston TX 711 PM CDT Sat Apr 4 2020

AVIATION. Light rain or lingering showers to slowly dissipate through 02Z this evening. This TAF period will remain dry with a slight threat for return precipitation chances returning to more western hubs tomorrow afternoon. Overnight LIFR to IFR ceilings will improve after 15Z to brief MVFR then VFR by the early afternoon hours. A weak easterly wind will veer to onshore by the end of the period. Visibilities will mainly remain VFR but there will be early day rural terminal periodic 3 to 5 SM within patchy fog. 31

PREV DISCUSSION. /ISSUED 345 PM CDT Sat Apr 4 2020/

SHORT TERM [Tonight Through Sunday] .

Overcast skies and areas of light rain with embedded heavier showers have been prevalent across Southeast Texas this afternoon in the wake of the cold front, and this has helped to keep afternoon highs so far ranging from the low to mid 50s well inland to the mid to upper 60s at the coast. For most locations, the high temperature for today likely occurred around or shortly after midnight. The forecast will continue to be on the tricky side for tonight and tomorrow as the cold front begins to edge its way back inland as a warm front. The timing of this frontal passage could play havoc with our temperature forecast, but for now am showing a general warming trend as the day progresses tomorrow. As for rain, will continue to show decreasing chances this evening and overnight after the current activity moves on to the east and out of the area. With the area remaining in an active southwest flow aloft, would not be surprised if we end up needing to raise area rain chances and lower high temperatures once again on Sunday. 42

LONG TERM [Sunday Night Through Saturday] .

Heading into next week, we enter a more active pattern that will bring a more persistent chance of showers and thunderstorms to SE Texas. While more substantial rain totals appear to have reached us between last night and this afternoon, the additional expected rainfall this coming week should provide some additional drought relief to portions of the CWA still classified under severe to extreme drought conditions.

By Monday, a surface warm front pushes inland and brings another round of scattered showers with the potential for isolated thunderstorms. An onshore flow pattern redevelops in the wake of the front, allowing for another surge of Gulf moisture to push PWAT values back into the vicinity of 2 inches throughout the day on Monday. Meanwhile, as a slowly moving upper-level low pushes into the western CONUS, a building upper ridge looks to take hold as the dominant feature for our region for the better part of the week. Should see a return to unseasonably warm temperatures by mid-week as a result, with Wednesday's highs pushing into the upper 80s in most locations. A summer-like pattern of diurnally- driven showers and thunderstorms remains in place through Thursday, with precipitation chances appearing highest across the northern counties.

Our next cold frontal passage is projected to come on Thursday night and into Friday, and have maintained 40-60% PoPs across most of the CWA during this period. Slightly cooler and drier conditions look to be in store as the front pushes offshore.

Cady

AVIATION [18Z TAF Issuance] .

Messy pattern will persist this afternoon and on through the overnight hours with a mix of mainly IFR/LIFR ceilings and periods of -RA/-SHRA. Lowering visibilities (mostly MVFR/IFR) are possible overnight. Expecting to see decreasing -RA/-SHRA coverage during the day tomorrow along with gradually rising ceiling and visibilities.

N to NE winds this afternoon will weaken this evening and then shift a little bit more to the NE during the day tomorrow. 42

MARINE .

A slightly tightened pressure gradient in the wake of a cold front is expected to continue to bring moderate to occasionally strong offshore winds to the area through early Sunday morning. Periods of light to moderate rain can also be expected through this period. Light to moderate northeast to east winds on Sunday will become onshore Sunday night and Monday as a warm front moves inland. A mainly light onshore flow and low seas can be expected until the next cold front moves through the area Thursday night or early Friday morning. 42

PRELIMINARY POINT TEMPS/POPS. College Station (CLL) 49 72 62 79 69 / 60 30 0 50 30 Houston (IAH) 55 73 66 79 71 / 50 20 0 50 20 Galveston (GLS) 65 70 70 77 74 / 80 10 0 30 10

HGX WATCHES/WARNINGS/ADVISORIES. TX . NONE. GM . SMALL CRAFT SHOULD EXERCISE CAUTION until 4 AM CDT Sunday for the following zones: Galveston Bay . Matagorda Bay.

Small Craft Advisory until 4 AM CDT Sunday for the following zones: Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM . Coastal waters from High Island to Freeport TX out 20 NM . Waters from Freeport to Matagorda Ship Channel TX from 20 to 60 NM . Waters from High Island to Freeport TX from 20 to 60 NM.



Aviation . 31


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MGPT2 - 8770613 - Morgans Point, TX 5 mi45 min N 8 G 8.9 61°F 72°F1014.3 hPa
EPTT2 - 8771013 - Eagle Point, TX 10 mi45 min N 8 G 14 64°F 71°F1013.9 hPa
NCHT2 - 8770777 - Manchester, TX 17 mi51 min NNE 4.1 G 6 59°F 72°F1013.8 hPa
GNJT2 - 8771341 - Galveston Bay (North Jetty), TX 22 mi51 min NE 16 G 17 67°F 73°F1012.5 hPa
GRRT2 22 mi45 min NE 14 G 17 66°F 71°F1014.2 hPa
GTOT2 23 mi45 min 72°F
RLOT2 - 8770971 - Rollover Pass, TX 26 mi45 min NE 11 G 13 66°F 69°F1013.6 hPa
HIST2 31 mi87 min N 6 G 8.9 64°F 73°F1014.2 hPa
LUIT2 38 mi45 min NNE 13 G 15 66°F 71°F1015.3 hPa
42035 - GALVESTON 22NM East of Galveston, TX 40 mi23 min E 18 G 21 67°F 72°F1014 hPa65°F
FCGT2 - 8772447 - USCG Freeport, TX 49 mi45 min NNE 9.9 G 14 65°F 71°F1014 hPa
FPST2 49 mi45 min N 17 G 19 66°F 74°F1013.3 hPa

Wind History for Morgans Point, TX
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Houston / Ellington, TX10 mi1.7 hrsN 88.00 miMostly Cloudy61°F59°F94%1013.9 hPa
Houston, Pearland Regional Airport, TX15 mi40 minN 68.00 miLight Rain62°F59°F90%1014.9 hPa
Houston, Houston Hobby Airport, TX16 mi40 minE 610.00 miMostly Cloudy61°F57°F90%1014.6 hPa
Galveston, Scholes Field, TX24 mi41 minNNE 910.00 miOvercast67°F64°F91%1014.9 hPa

Link to 5 minute data for KEFD

Wind History from EFD (wind in knots)
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Last 24hrN6NE2E3N2N3CalmE3E3W3N13NW11
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NW11NW15NW15N15N15--NW5NW7N12N10N10N8N6
1 day agoE11E11E11E8E8E10E8E10E9E6E12E16E11SE13E10--E14SE13E12E12E10E11E5SE4
2 days agoSE6E5E4E4E5--E5E5E6E6E5E9SE6E10SE10E12
G19
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----E18------

Tide / Current Tables for Barbours Cut, Morgans Point, Galveston Bay, Texas
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Bolivar Roads, Texas Current
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Bolivar Roads
Click for Map
Sat -- 04:53 AM CDT     Moonset
Sat -- 07:04 AM CDT     Sunrise
Sat -- 07:19 AM CDT     -1.99 knots Max Ebb
Sat -- 11:50 AM CDT     0.00 knots Slack
Sat -- 03:20 PM CDT     1.96 knots Max Flood
Sat -- 04:03 PM CDT     Moonrise
Sat -- 07:39 PM CDT     Sunset
Sat -- 09:44 PM CDT     -0.00 knots Slack
Sat -- 11:52 PM CDT     -0.36 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.5-0.5-0.6-0.9-1.2-1.6-1.8-2-2-1.7-1.3-0.70.111.61.91.91.61.20.90.60.2-0.1-0.3

Weather Map
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wmap_A
GEOS Local Image of SouthCentralPlains    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Houston/Galveston, TX (22,6,7,8)
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Ground Weather Radar Station Houston/Galveston, TX
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weather_mapweather_map weather_map

Gulf Stream Current


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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.